| Summary: | 碩士 === 中原大學 === 土木工程研究所 === 96 === Tuned mass damper (TMD) is one of passive controllers. According to previous researches, mass magnitude affects reducing of the building response; however, the most of the mass is fixed. A variable mass method is proposed in this thesis, and the proposed method is demonstrated by high speed pump and the sliding mode control (SMC).
In control theory, the proper control rule can not be directly derived from the variable structure control system (VSS) control rule to the ATMD control system since it is canonical control form. The sliding mode control rule is obtained from the transfer matrices, and VSVH pump is applied to be the controller here with the maximum flow rate is 10 .
The simulation results show that the tuned mass damper due to variable mass can effectively reduce dynamic response of the buildings under external disturbances. In multiple-degree of freedom system, locating the sensor at the top of the building is effective and that is economical and functional. Additionally, sliding surface coefficients in control rule is changing while mass is decreasing. During control phase, the bigger mass is, the better reducing will be, but interior parameters of buildings will be changed owing to a huge mass. The findings in this thesis can be a reference for a future research.
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